good call; unfortunately the magazines are already on their way to me. I guess I was too overconfident from my experience with thier 8 round mag & upgrade kits...to think about ordering just one 10 rounder to try out.
what i'll do is run a single mag first to see if there are any issues. that way, in worst case scenario the other three remain unused for an attempt at a return with Tripp or I can try to re-sale.